virtualbox.org

Hello, i installed windows 7 on virtual machine.
Now i need to connect to a printer using pl232 USB converter (prolific pl2303 usb to serial).
If i'm typing on the Host terminal (Ubuntu) lsusb i can see it is recognizing the conveter, But on the virtual machine (windows 7) i can't see the device on the Device Manger.
i"m kind of new in this field so i'll appreciate the help...

Go through USB basics and troubleshooting. If steps 1 through 7 cannot get your device working, please provide the troubleshooting command outputs in step 8, as text in